2123704 has 16 divisors (see below), whose sum is σ = 4344120. Its totient is φ = 965280.

The previous prime is 2123701. The next prime is 2123707. The reversal of 2123704 is 4073212.

It is an interprime number because it is at equal distance from previous prime (2123701) and next prime (2123707).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123701) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11979 + ... + 12154.

2^2123704 is an apocalyptic number.

It is an amenable number.

2123704 is an abundant number, since it is smaller than the sum of its proper divisors (2220416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2123704 is a wasteful number, since it uses less digits than its factorization.

2123704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24150 (or 24146 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 2123704 is about 1457.2933815811. The cubic root of 2123704 is about 128.5379378966.

Adding to 2123704 its reverse (4073212), we get a palindrome (6196916).

It can be divided in two parts, 212 and 3704, that added together give a triangular number (3916 = T₈₈).

The spelling of 2123704 in words is "two million, one hundred twenty-three thousand, seven hundred four".